Hungary blames 'armed mob'
Hungarian government spokesman Zoltan Kovacs told CNN on Wednesday that Hungarian forces had been driven to respond when young men armed with sticks and stones tried to enter the country.
He said he believed CNN footage of the situation did not give a true picture of events.
"An armed mob of a couple of hundreds of people are trying to enter Hungarian territory without any kind of permit," he told CNN's Becky Anderson.
He maintained that "proportionate police force" was used.
Aleksandar Vulin, Serbia's labor and social welfare minister, said his country had protested to Hungary over the use of tear gas into Serbian territory, while German Defense Minister Ursula von der Leyen told CNN's Christiane Amanpour that Hungary's treatment of refugees is "not acceptable."
Hungary's conduct was "against ... European rules," she said, adding that refugees had a right to be treated decently.
Hungary has suspended traffic at the border crossing for up to 30 days, Serbia's Ministry of Foreign Affairs said Wednesday.